091079

We request MAGIC observations to provide sensitive VHE coverage for the multi-instrument campaigns in2021-2022. These MAGIC observations are needed to characterise with accuracy the high-energy bump and its temporal evolution with simultaneous coverage for the low-energy bump. This experimental work allows addressing fundamental questions on how Mrk421 and Mrk501 function comma which may be generalized to other blazars that are more difficult to study because they are weaker or located further away. The multi-year MAGIC data we are collecting provide unprecedented VHE coverage with high sensitivity and low energy threshold and comma together with the related MWL data openParincluding striclty simultaneous observationsclosePar comma will become one of the MAGIC legacy products.